Comparing charts for transmissioin ratios '09

Shin
06-18-2009, 11:14 AM
I had to go deeper in some deatails about my '09 after braking in and realizing some funny impressions about acceleration and how i perceive it. For short: If i go out with my '98 R-1, +14HP, 185Kg (370pds), short transmission, i have the feeling it pulls more, but it doesn't accelerate faster in real. Im still in the process of comparison after changing my front sprocket on the '09 to 16t. a few days ago. Funny thing is, i have now the exact same gear shift speeds as my '98 has :-) Only 1-st gear is longer. There are a few forum members that claimed, an other liter bike did scare the shit out of them (i think you call it like this) and the R-1 has poor power. Same as i feel when riding, but numbers are different from feelings: Comparison in 'PS' (german magazin), 06.09: Pull from 50-100km/h / 100-150km/h R-1: 4,0 / 3,9 sec. (stock gearing!) GSX-R: 4,5 / 4,1 RC8-R: 4,8 / 4,6 ZX10-R: 5,4 / 4,2 Fireblade: 4,5 / 3,6 1198S: 5,0 / 4,1 RSV-4: 4,7 / 4,5 Interesting if you hear ex ZX10-R rider say, the R-1 has 'no' power. Imagine how fast the R-1 is in pull through gear with normal long gearing. The 16t. in front seems to me like the bike could come from Yamaha, it's not realy a short gearing. For sprinting, standing start, it's the same. Fastest 0-200 km/h together mit Fireblade and 0-150 km/h fastest together with RSV-4. So i think you can say there is a miss perceiving, or different perceiving of power (or accelaration) from the '09 R-1. Agree? So far i see two reasons for it: - tall gearing - crossplane motor (together with motor management) Im starting with point 1) gearing and did some comparison charts to get a overview. Maybe you find it interesting, too. Looking forward to discuss with you the possible reasons, why the crossplane motor could maybe feed some different feelings to our rider sensors. Cheers!

R1Slapper
06-18-2009, 02:57 PM
Compare the dyno torque curves of the two. Lets say you have 2 engs same Tq and same gearing, weight and so on. If you have an eng. that has a broad flat curve, acceleration starts early last longer, you feel the rush for a longer time, you get use to it, the sensation is not so sensational. Now you go to an eng with a sharp curve comes on later peaks later but is shorter, you are going to feel sharp peak, quick and it comes on hard but does not last long, like a 2 stroke, vs 4 stroke. Its going to feel like more because it comes on hard but does not last, very sensational. That may be the difference you feel. All else being equal the long flat Tq curve eng/ bike will accelerate faster, especialy if you are doing a gear to gear test from one speed to another, ie. top gear 50-100mph test

vcyclenut
06-18-2009, 03:16 PM
this is why the butt dyno is in acurate, if you mod the bike and hurt the midrange even if the top end is the same it will feel stronger as you get the rush when you come out of the soft zone

2009RavenR1
06-18-2009, 04:04 PM
So based of your chart, the 09 R1 is gear limited to 185 MPH?

Shin
06-18-2009, 05:16 PM
Will replay soon, i'm at work... So based of your chart, the 09 R1 is gear limited to 185? I'm not shure if Yamaha did adjust 6-th gear to reach max. topspeed. If they did and you have max.HP at 12'500rpm you will maybe reach 13'000 rpm (depens on power curve) in 6-th. what coresponds to 185mph, as you said. A gear limit would be at 13'800rpm, max.rpm. I've taken 13'000rpm as a shift rpm, because in higher gears you loose stock to much power over 13'xxx rpm, but have plenty in next gear. 1-st. i would squeez out to max.rpm.

2009RavenR1
06-18-2009, 06:17 PM
Well either way... wind comes into play more than gearing at speed. The R1 doesn't make enough power to overcome the wind.

Shin
06-18-2009, 09:56 PM
Ahh...finaly time to answer! Thanx for feedback. Absolutly. Both point in the same direction and as a rider starting with 2 stroke engines, HP exploding at a given rpm i know this subjectiv feeling well. But look at the HP/torque graph attached, do you find this '...broad flat curve' of torque, toping the competiters in area under the line but with maybe smaller peak? For me it looks the other way. Not flatter as you would assume and down everywhere in comparison. In HP as in torque (let's forget below 5000rpm). But still with best accelaration from start and roll on... opinions?

Shin
06-18-2009, 10:04 PM
The R1 doesn't make enough power to overcome the wind. You're so right, and there will be no engine on earth that will overcome the wind... but pull your elbows in and you get a few hundred rpm more from the god of wind!